Publications (1)0 Total impact
ABSTRACT: J. Inst. Brew. 110(4), 267–275, 2004 Total luminescence and synchronous scanning fluorescence spectroscopic techniques were applied for characterization of the intrinsic fluorescence of eight different beers. Spectra were mea-sured using different geometries to reveal the presence of similar fluorescent components. The total luminescence and synchro-nous fluorescence spectra exhibit a relatively intense short-wavelength emission ascribed to aromatic amino acids and less intense emission in the long-wavelength region, which may originate from B vitamins. Classification of beers based on their synchronous fluorescence spectra was performed using non-parametrical k nearest neighbours method and linear discrimi-nant analysis. Very good discrimination was obtained in both methods with a low classification error. The results demonstrate the potential of fluorescence techniques to characterize and dif-ferentiate beers.